Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Details) (Roll-forward of Level 3 Financial Investments)

v2.4.0.8
Financial Instruments (Details) (Roll-forward of Level 3 Financial Investments) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance $ 15 $ 32 $ 28 $ 38
Redemption 0 0 (13) (6)
Ending Balance $ 15 $ 32 $ 15 $ 32